2 files changed, 259 insertions, 0 deletions
diff --git a/worldedit/cuboid.lua b/worldedit/cuboid.lua
new file mode 100644
index 0000000..ce20761
--- /dev/null
+++ b/worldedit/cuboid.lua
@@ -0,0 +1,258 @@
+-- Expands or contracts the cuboid in all axes by amount (positive or negative)
+worldedit.cuboid_volumetric_expand = function(name, amount)
+	local pos1 = worldedit.pos1[name]
+	local pos2 = worldedit.pos2[name]
+	
+	if pos1 == nil or pos2 == nil then
+		return false, "Undefined cuboid"
+	end
+	
+	local delta1 = vector.new()
+	local delta2 = vector.new()
+	local delta_dir1
+	local delta_dir2
+	
+	delta1 = vector.add(delta1, amount)
+	delta2 = vector.add(delta2, amount)
+	delta_dir1, delta_dir2 = worldedit.get_expansion_directions(pos1, pos2)
+	delta1 = vector.multiply(delta1, delta_dir1)
+	delta2 = vector.multiply(delta2, delta_dir2)
+	worldedit.pos1[name] = vector.add(pos1, delta1)
+	worldedit.pos2[name] = vector.add(pos2, delta2)
+	
+	return true
+end
+
+
+-- Expands or contracts the cuboid in a single axis by amount (positive or negative)
+worldedit.cuboid_linear_expand = function(name, axis, direction, amount)
+	local pos1 = worldedit.pos1[name]
+	local pos2 = worldedit.pos2[name]
+	
+	if pos1 == nil or pos2 == nil then
+		return false, "undefined cuboid"
+	end
+	
+	if direction ~= 1 and direction ~= -1 then
+		return false, "invalid marker"
+	end
+	
+	local marker = worldedit.marker_get_closest_to_axis(name, axis, direction)
+	local deltavect = vector.new()
+	
+	if axis == 'x' then
+		deltavect.x = amount * direction
+	elseif axis == 'y' then
+		deltavect.y = amount * direction
+	elseif axis == 'z' then
+		deltavect.z = amount * direction
+	else
+		return false, "invalid axis"
+	end
+	
+	worldedit.marker_move(name, marker, deltavect)
+	return true
+end
+
+
+-- Shifts the cuboid by '+-amount' in axis 'axis'
+worldedit.cuboid_shift = function(name, axis, amount)
+	local pos1 = worldedit.pos1[name]
+	local pos2 = worldedit.pos2[name]
+	
+	if pos1 == nil or pos2 == nil then
+		return false, "undefined cuboid"
+	end
+	
+	if axis == 'x' then
+		worldedit.pos1[name].x = pos1.x + amount
+		worldedit.pos2[name].x = pos2.x + amount
+	elseif axis == 'y' then
+		worldedit.pos1[name].y = pos1.y + amount
+		worldedit.pos2[name].y = pos2.y + amount
+	elseif axis == 'z' then
+		worldedit.pos1[name].z = pos1.z + amount
+		worldedit.pos2[name].z = pos2.z + amount
+	else
+		return false, "invalid axis"
+	end
+	
+	return true
+end
+
+
+-- Moves the location of a single marker by adding deltavector
+worldedit.marker_move = function(name, marker, deltavector)
+	if marker ~= 1 and marker ~= 2 then
+		return false
+	end
+	
+	if marker == 1 then
+		local pos = worldedit.pos1[name]
+		worldedit.pos1[name] = vector.add(deltavector, pos)
+	else
+		local pos = worldedit.pos2[name]
+		worldedit.pos2[name] = vector.add(deltavector, pos)
+	end
+	
+	return true
+end
+
+-- Updates the location ingame of the markers
+worldedit.marker_update = function(name, marker)
+	if marker == nil then
+		worldedit.mark_pos1(name)
+		worldedit.mark_pos2(name)
+	elseif marker == 1 then
+		worldedit.mark_pos1(name)
+	elseif marker == 2 then
+		worldedit.mark_pos2(name)
+	else
+		minetest.debug(
+			"worldedit: Invalid execution of function update_markers")
+	end
+end
+
+
+-- Returns two vectors with the directions for volumetric expansion
+worldedit.get_expansion_directions = function(mark1, mark2)
+	if mark1 == nil or mark2 == nil then
+		return
+	end
+	local dir1 = vector.new()
+	local dir2 = vector.new()
+
+	if mark1.x < mark2.x then
+		dir1.x = -1
+		dir2.x = 1
+	else
+		dir1.x = 1
+		dir2.x = -1
+	end
+	if mark1.y < mark2.y then
+		dir1.y = -1
+		dir2.y = 1
+	else
+		dir1.y = 1
+		dir2.y = -1
+	end
+	if mark1.z < mark2.z then
+		dir1.z = -1
+		dir2.z = 1
+	else
+		dir1.z = 1
+		dir2.z = -1
+	end
+	return dir1, dir2
+end
+
+
+-- Return the marker that is closest to the player
+worldedit.marker_get_closest_to_player = function(name)
+	local playerpos = minetest.get_player_by_name(name):getpos()
+	local dist1 = vector.distance(playerpos, worldedit.pos1[name])
+	local dist2 = vector.distance(playerpos, worldedit.pos2[name])
+	
+	if dist1 < dist2 then
+		return 1
+	else
+		return 2
+	end
+end
+
+
+-- Returns the closest marker to the specified axis and direction
+worldedit.marker_get_closest_to_axis = function(name, axis, direction)
+	local pos1 = vector.new()
+	local pos2 = vector.new()
+	
+	if direction ~= 1 and direction ~= -1 then
+		return nil
+	end
+
+	if axis == 'x' then
+		pos1.x = worldedit.pos1[name].x * direction
+		pos2.x = worldedit.pos2[name].x * direction
+		if pos1.x > pos2.x then
+			return 1
+		else
+			return 2
+		end
+	elseif axis == 'y' then
+		pos1.y = worldedit.pos1[name].y * direction
+		pos2.y = worldedit.pos2[name].y * direction
+		if pos1.y > pos2.y then
+			return 1
+		else
+			return 2
+		end
+	elseif axis == 'z' then
+		pos1.z = worldedit.pos1[name].z * direction
+		pos2.z = worldedit.pos2[name].z * direction
+		if pos1.z > pos2.z then
+			return 1
+		else
+			return 2
+		end
+	else
+		return nil
+	end
+end
+
+
+-- Translates up, down, left, right, front, back to their corresponding axes and 
+-- directions according to faced direction
+worldedit.translate_direction = function(name, direction)
+	local axis, dir = worldedit.player_axis(name)
+	local resaxis, resdir
+	
+	if direction == "up" then
+		return 'y', 1
+	end
+	
+	if direction == "down" then
+		return 'y', -1
+	end
+	
+	if direction == "front" then
+		if axis == "y" then
+			resaxis = nil
+			resdir = nil
+		else
+			resaxis = axis
+			resdir = dir
+		end
+	end
+	
+	if direction == "back" then
+		if axis == "y" then
+			resaxis = nil
+			resdir = nil
+		else
+			resaxis = axis
+			resdir = -dir
+		end
+	end
+	
+	if direction == "left" then
+		if axis == 'x' then
+			resaxis = 'z'
+			resdir = dir
+		elseif axis == 'z' then
+			resaxis = 'x'
+			resdir = -dir
+		end
+	end
+	
+	if direction == "right" then
+		if axis == 'x' then
+			resaxis = 'z'
+			resdir = -dir
+		elseif axis == 'z' then
+			resaxis = 'x'
+			resdir = dir
+		end
+	end
+	
+	return resaxis, resdir
+end
+\ No newline at end of file
diff --git a/worldedit/init.lua b/worldedit/init.lua
index ec6e99d..343a1e4 100644
--- a/worldedit/init.lua
+++ b/worldedit/init.lua
@@ -37,6 +37,7 @@ load_module(path .. "/serialization.lua")
 load_module(path .. "/code.lua")
 load_module(path .. "/compatibility.lua")
 load_module(path .. "/wand.lua")
+load_module(path .. "/cuboid.lua")
 
 
 if minetest.setting_getbool("log_mods") then